Bookkeeping machine



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140 57591,:un 5u /ye e Patented Apr. 20,1943

BOOKKEEPIN G MACHINE Elis Magnus Magnusson, Stockholm, Sweden, assignor, by mesne assignments, to Ekonomiregister Inc., New York, N. Y., a corporation of New York Application July 30, 1938, Serial No. 222,244

In Sweden July 8, 19-36 7 Claims.

This application is a continuation-in-part of application Serial No. 38,475 filed August 29, 1935, and, as to common subject matter, relates back to said application Serial No. 38,475 for all dates and rights incident to the filing thereof and the filing of foreign applications corresponding thereto,

My present invention relates to apparatus and machines for accounting, book-keeping and balancing purposes.

My invention has particular relation to apparatus or machines of this type having a plurality of adding and subtracting totalizers and sometimes also totalizers adapted only for addition; said totalizers being operable in such manner that all those totalizers which are combined in a certain operating cycle of the machine are selected and have their respective sense of calculating operation determined by a single setting member individual to said combination, or by a certain position of a setting member common to several of said combinations, which position is individual to a certain combination.

In known machines of this type subtotaling and totaling of negative amounts contained in a totalizer has not been possible in a single cycle of the machine, this depending on the wellknown fact that, as the normal position of the subtracting wheels of such a totalizer is at 9 instead of 0, theamount contained in said subtracting wheels, when the totalizer has passed from positive to negative, is one unit short. 7

It is an object of my invention to provide an apparatus or machine of the type described permitting in one single operating cycle of the machine the setting of a totalizer to take negative amounts contained in the totalizer and of other totalizers to add or subtract said amounts.

Another object of my invention is to provide an apparatus or machine of the type described permitting setting of a totalizer to take totals by means of one single setting of one single member.

Still another object of my invention is to provide an apparatus or machine of the type described in which means are provided automatically to add a unit to the amount contained in totalizer, when said amount is negative, said means being controlled ,by the same setting member which sets the totalizer to take a negative subtotal.

A further object of my invention is to provide an apparatus or machine of the type described having means controlled by a totalizer or totalizers to render it possible to use the same setting member for totaling or subtotaling the provide an apparatus or machine of the type described having means preventing a setting member or members from being actuated, when a given totalizer is not in zeroized position.

These and other objects of my invention will be apparent according as the specification proceeds reference being made to the accompanying drawings which" form part of this specification and in which a preferred embodiment of the machine is shown.

In the drawings:

Fig. 1 is a plan view of the machine with various details omitted for the sake of clearness;

Fig. 2'is a lateral view of the central section of the machine, the key board being partly broken to show-an amount key andthree analyzing and totaling keys;

Fig. '3 is a partial front view of the key board;

Fig. 4 is a partial lateral view of the key board showing also an automatic key releasing mechanism in releasing position; 5

Fig. 5 is a lateral view of the controlling means for totalizer a; v

Fig. 6 is a lateral view of the means for re turning the ten transfer mechanisms into starting position; I

Fig. 7 is a perspective view of the connections of a given analyzing key'with'members selecting a combination of totalizers and controlling the sense of calculation of said selected totalizers;

Fig. 8 is a perspective and purely diagrammatic view of the machine showing the disposition of the eleven totalizers in relation to each other;

Fig. 9 illustrates the connections between the actuator wheels of thecentral section and those of the lateral sections;

Figs; 10 and 11 are a plan view and a lateral view, respectively, of totalizer a inFigs, 1 and 2 on an enlarged scale;

Fig. 1 2 is a lateral view showing the mechanism for supplying a fugitive one in totalizer a for totaling negative amounts; v

Fig. 13 is a partial view on an enlarged scale of the mechanism for setting a totaling key compulsory to take a positive or negative total;

Fig. 14 is a partial perspective view of Fig. 11;

Fig. 15 is a partial perspective view of a means for looking a registering key;

Fig. 16 is a partial lateral view of the key board showing part of a releasing mechanism for the actuator slides of the digit keys;

Figs. 17 and 18 are a plan view and a front view, respectively, of said releasing mechanism;

Figs. 19 and 20 are a partial lateral view and a plan .view, respectively, of a modified embodiment of said releasing mechanism;

Fig. 21 is a lateral .view of the-.re1easing rod of Figs. 19 and 20;

Fig. 22 is a diagram illustrating the mode of operation of the machine in a given example.

Key board The key board, see especially Fig. 1, comprises thirteen analyzing keys selecting and setting the totalizers to carry out different business transactions, viz. nine keys inclusive, for the registration of amounts in the totalizers (registering keys) and four keys inclusive, for the taking or totals and subtotals (totaling and subtotaling keys) further four keys to R IV VII inclusive, for zeroizing certain of the totalizers, further a plurality of rows of special keys generally designated by C and serving for the regise tration of the name and the day of the month, and finally a plurality of rows of amount or digitkeys generally designated by D.

All of the keys rest each on a vertical rod 2| (see Figs;2, 3 and 4) actuated by a spring 20 and provided with two pins 22 and 23. All the keys of a row cooperate by their pins 22 with an inclined surface 24 on a stopping plate 25 rotatably mounted on a shaft 26 and actuated by a spring 21. Arranged below said plate 25 is an actuator slide 28 having a shoulder 29 which in starting position of the slide is disposed at a horizontal distance from the edge of the plate 25 corresponding to one tooth for the purpose to be described later on. Further, all the keys of each row cooperate by their pins 23 with hooks 302: on a detent rod 30 suspended in arms 3| fixed on twoshafts 32 and 33. The rods 30 are movable in their longitudinal direction by a pin 31 on one of the arms 3| engaging a slot 34 in rod 38. A- spring 35 tends to retain the rod 30 in engagement with a stopping bar 38.

By means of a link engaging the lower end of each of the key rods 2|, each analyzing key and zeroizing key is connected to an arm 82 secured 60 on a shaft 83 (see also Fig. 7). Fixed on said 'shaft 83 are arms 64 of a number corresponding to that of the functions to be performed when depressing the key. By means of a wire 65 each of said arms 64 is connected to a lever 66a, 67a, 68a, 65 69a, 10a or I la (see Fig. 2 in which the subscript a is given the reference numerals mentioned to indicate that the parts seen in this figure are for the a totalizer), said levers being eachby link or wire connected with the member to be controlled 70 as will be further described later on.

Automatic key releasing mechanism Secured to the main driving shaft 5|! of the machine is a disk 14 (see Fig.2 and espeially Fig.

4) carrying a double-armed lever 11 rotatably mounted on a stud 15 on the disk and actuated by a spring 18 which tends to retain lever 11 in engagement with a stop 18 on disk 14. Cooperating with the end 19 of lever'l'l by its hook-shaped arm 8| is a bell-crank lever 84 rotatably mounted on a stud 8|), the other arm of said lever 84 being connected by means of a link 88 to the lower end of an arm 81 secured to shaft 32. A spring 85 tends to maintain the lever 84 in starting position with arm 81 in engagement with a stop 88.

The keys are returned into starting position in the following manner. When the main driving shaft 50 is rotated in clockwise direction by the customary actuating mechanism, 1. e. a crank or a key-controlled motor, arm 11 is rocked on its stud 15 counter-clockwise from the position shown in Fig. 2 against the action of the spring 16 past bell-crank lever 84 which is not actuated as it is prevented therefrom by stop 88. When arm 11 has passed bell-crank lever 84 spring 15 returns the arm into starting position into engagement with stop 78. On the return stroke of the driving shaft 50 arm 1! with its end 19 strikes the hook-shaped end 8| of bell-crank lever 84 rocking said lever in clockwise direction into the position shown in Fig. 4. By means of link 86 and arm 81 this movement is transmitted to the detent rods 30 causing the pins23 of the key rods 2| to be brought out of engagement with the hooks 38a: of said detent rods and the keys to be returned into starting position by the action of their springs 20. The position of arm Ti and that of bell-crank lever 84 are such as to cause arm 11 to move out of engagement with the hook 8| on its further rotation, the bell-crank lever 84 being returned into starting position by the action of its spring 85.

Actuator mechanism Rotatably mounted on a common shaft 46 (see Fig. '2) are a plurality of toothed wheels 45, the actuator wheels, each wheel being actuated by a spring 48 secured to a bar 41. Each actuator slide 28 is pivotally connected as at 28 to a link 40 which in its turn is connected as at 40 to a second link 4| pivoted by means of apin 42 to the corresponding actuator wheel 45. There is an actuator wheel 45 provided for each of the rows of date and digit keys C and D and, if desired, also for the rows of analyzing and totaling keys A, B, B. Each actuator wheel is connected by means of a double armed lever with a printing type bar, as will be described later on, whereas only such wheels 45.corresponding to the rows of digit keys D are in mesh with and control totalizer wheels.

Secured to the driving shaft 50 is a-cam disk 5| (see Figs. 1 and. 2), and riding on said cam disk is a roller 52 on an arm 53 rotatably mounted on a stud 54. A spring 58 tends to maintain roller 52 in engagement with disk 5|. At its free end arm 53 is pivotally connected to a link 55 which is movable in its longitudinal direction. With its other end link 55 embraces a return rod 56 connecting the lower ends of two arms 51 secured to the shaft 48 of the actuator wheels 45. Rod 55 locks the actuator wheels normally by engaging one of the spokes thereof.

Setting of the actuator by the keys .ing-said plate in counter-clockwise direction as shown in Fig. 3. At the same time pin 23 forces tion by spring 35.

the detent rod 30 towards the left in Figs. 2 and 4 and engages the corresponding book 30:: thereon, the rod 30 being then returned to starting posi- In each stopping plate 25 which has not been actuated the edge of the plate serves as stop for the shoulder 29 of the actuator slide 28, whereas pin 22 serves as such v a stop, when a key of the corresponding ke row has been depressed. When then on starting the machine duringv the forward stroke the main driving shaft 50 is rotated in clockwise direction, arm 53 and link 55 are moved a full stroke to the left in Fig. 2 under the action of spring 53, causing the actuator wheels 45 to be disengaged from locking rod 55. Under the action of its spring 43 each actuator wheel 45 is then rotated through an angle corresponding to the distance through which the corresponding actuator slide 28 is permitted to move to the left in Figs. 2 and 4, that is to say for a key which has not been actuated, until the shoulder 29 strikes the edge of the corresponding stopping plate 25 and for a key which has been actuated, until said shoulder strikes the corresponding pin 22. During the return stroke of the machine all actuator wheels 45 and, consequently, also the actuator slides 20 are returned into starting position by the action of return rod 56.

As far as a depressed analyzing or zeroizing key is concerned the totalizers are simultaneously conditioned for operation in correspondence to the desired business transaction as will be more fully described later on.

General design of the machine In the embodiment shown (see Figs. 1 and 8) there are eleven totalizers designated by a, b, c, d, e, f, g, h, k, l and m, see Fig. 8. Totalizers a, b, c, d, e, f and g are adding and subtracting ttalizers, whereas totalizers h, k, l and m areonly adding totalizers. The totalizers are arranged in three sections, the totalizers a, b and c in a central section, totalizers d, e and j in a righthand section and the other totalizers in a lefthand section (see Fig. 1). In this connection it is to be observed that the number of totalizers may be varied according to the use for which the machine is intended.

The main driving shaft 50, the actuator shaft 46 and the return rod 50 extend through all three sections of the machine. The operating mechanism I to 51 of the actuator wheels 45 is arranged at the right hand of the right hand section as shown in Fig. l. The actuator wheels 45 of each section are common to all totalizers in said section. The actuator wheels of the central section are actuated directly from the keyboard, whereas the actuator wheels of the lateral sections are set by the influence of those of the central section in the following manner (see Figs.,

2 and 9).

Permanently in mesh with each actuator wheel 45 of the amount or digit keys D is a pinion 80, 90 etc., and those pinions which correspond to actuator wheels of the same denominational order in the three sections are'flxed on one and the same shaft 9|, 9I etc. Consequently, an amount set up on the keyboard and transferred to the actuator wheels of the central section will be compulsorlly transferred to the actuator wheels of the lateral sections which, thus, also will be set in accordance with the setting of the keyboard.

The operating shafts 83 of the analyzing and zerolzing keys A, B and R extend at both sides of the central section in front of the lateral sections and carry on said extensions arms 64 each connected by a wire to a lever 56, 61, 83, 83, 10 or H connected by link or wire with the control members of the totalizers of said lateral sections.

In Fig. 2 which shows the totalizers a, b and c of the central section only totalizer a is shown to be provided with means for supplying the fugitive one and only totalizer b is shown to be provided with tens transfer means in order to render the illustration more perspicuous, but it is to be observed that all totalizers are provided with tens transfer means and that all totalizers from which a negative total or subtotal is to be taken are provided with fugitive one supplying means.

In the drawings the different parts of the totalizers as well as the various'members controlling same are designated by the same reference numerals with the addition in Figs. 1, 2 and 5 of the letter a, b etc. which indicate the particular totalizer to which said parts or members belong. In Figs. 10 and 11 which illustrate specifically the totalizer a but which may be referred to for the description of any adding and subtracting totalizer, the different parts are designated only by the reference numerals without addition of any letter except for some parts which are characteristic of totalizer a.

General design of the totalizers and their tens transfer mechanism Referring especially to Figs. 10 and 11 each adding and subtracting totalizer comprises two sets of permanently intermeshing toothed wheels I00 and IOI. The adding wheels I00 are rotatably mounted on a common spindle I02 and the subtracting wheels "II are rotatably mounted on a common spindle I03. The adding wheels stand normally at 0, whereas the subtracting wheels IOI normally stand at 9. The spindles I02 and I03 are secured in a common bridge I04 movable in a manner to be described later on so as to bring the totalizer wheels I00 and III selectively into and out of engagement with a group of intermediary toothed wheels I 10 journalled on a common shaft I65 and permanently in mesh with the actuator wheels 45. In the embodiment shown the ten transfer means of the totalizer is applied to these intermediary wheels The pairs of totalizers h, k and l,-m form each a unit equal to an adding and subtracting totalizer with the difference that the wheels of the totalizers of a pair do not mesh with each other.

Each intermediary wheel I10 comprises two halves HI and I12, one half I1I having conventional teeth and engaging corresponding actuator wheel 45 and the other somewhat thinner half I12 having pointed teeth in order to facilitate their engagement with the totalizer wheels I00, MI, The wheel half I1I has an arc-shaped slot I13 and the wheel half I12 has a pin I14 engaging said slot. The slot I13 has a length corresponding to one tooth. The wheel halves are connected with each other by means of a spring I15 which tends to keep the pin I14 in abutting engagement with the upper edge of the slot I13. Each intermediary wheel I10 is provided with a ten transfer pawl I50 in the form of a bellcrank lever rockable on a shaft I19. The pawl I30 has its one arm IBI shaped to form a trim- .lever is a double-armed means of a spring 203 is kept'in abutting engagerovided on lever 200. 7

. 22 on a disk I20 secured The levers 200 and 202 together with appurtenant with the wheel half in and cooperating with atransfer tooth I83 provided on said totalizer wheel. The other leg 1188 of the ten transfer pawl E80 cooperates through its end I85 with the pin lid of the wheel half E12 of the next higher order.

Secured to arm I84 is a pin'I06 engaging alterlever I90 rockable on a stud I80. A spring I02 connects a projection I 9| of the ten transfer pawl I80 with lever I90 and tends to keep the pin i88 on said pawl I80 in engagement with either of the recesses I81 and I88. Secured on a shaft l95 are bell-crank levers I08 and I01. A pin I952. on one arm of the lever I98 is adapted to cooperate with the detent lever I90 and the other arm of the lever I98 with the pin "4.,

The bell-crank lever I S'l is adapted to be operated from the driving shaft 60 in the following manner, (see especially Fig. 6). Journalled on a shaft I42 is a lever 200 maintained in engagement with a stop I99 by a spring .I 21. Journalled on a stud 20I on. one arm of said lever 202 which by ment with a stop 204 Lever Ed? is adapted tobe operated by an arm to the driving shaft 50.

parts are common to all three totalizers of a section and are arranged at the section right below a locking mechanism for the totalizers to be described hereinafter. It is to be observed. howeventhat the above mecha- 280 and 202 may be comnism including levers mon to all totalizers of the machine.

The arm of thelever 200 remote from lever 292 i connected with the above-mentioned bell crank lever Mile of totalizer a (see also Fig. 2) by means of a link 205, a bell-crank lever 208 fulcrumed at 208a: and a link 20?. To the totalizer b the movementis'transferred from lever laid by means of a link 3E0 connecting said lever with the lever .lalb. To the totalizer c the movement is transmitted from bell-crank lever 268m? means of a link 3i i connecting said lever with the bell-crank lever i970 (see also Fig. 6).

The operation of the ten transfer mechanism will be described in connection with the periormance of addition in totalizer a.

Mechanisms for directing the totalizers for Y addition, subtraction and positive totaling As seen in Figs. -1 and 2 and on an enlarged scale in Fig. 6 the disk 828 secured to the main shaft on is provided with a peripheral projection iii, and, cooperating with said projection is a roller 82% on a locking arm i25 rockable on a stud ltd, said roller its being normally retained in engagement with the projection by the above said spring i2i. Engaging the free end of arm 525 i a link lSd which by means of a bell-crank lever 58B and a link S32 is rotatably connected with a pin I33a on an arm I341: securedto a shaft idea. Pin 533a projects somewhat beyond a double-armed lever Ia rockable on the shaft idea and normally locked by said pin I33a.

The corresponding arm I341 of the totalizer b (see Fig. 2) is connected with arm i34a by means of a link 352 and arm I340 of totalizer c is connected with arm i342) by means of a link 3553 and a bell-crank lever 3M.

The locking mechanism above described is nately one of two recesses I81 and I88 in a detent the right-hand side of side of seven.

vided also for each of the lateral sections, the mechanism being arranged at the right-hand the corresponding section as seen in Fig. 1. In. addition to said common control means the setting tion or totaling is controlled in the following manner (see Fig. 2).

One of the arms of the bridge I04a in which the totalizer a is mounted is at its free end as at. I0la pivotally connected to one arm of the double-armed lever I05a actuated by .a spring I0Ia which'tends to swing the lever in counter-clockwise direction in Fig. 2. The other arm of the lever .I0lia is locked by a pawl IIOa retained in locking position by a spring Ia and connected by means of alink II2a with'a bellcrank lever 66a operable by the analyzing keys.

The spindle I02a projects somewhat beyond the bridge I04a and rests on one arm of an angular catch II4o'rockable on'a stud H311 and retained in engagement with the spindle I021: by a spring I I6a. The other arm of the catch is, by a link I I do, connected to a bell-crank lever 81a operable by the analyzing keys.

With its free end stud I38a on the end a stud I3'Ia-(see also Fig. 11'). Pivoted to the stud I380 is a link Ia which at its other end (see especially Fig. 5) arm I4Ia of an Y-shaped lever I43a rotatable about the shaft I42,.the otherarms of said lever I one such v shaped element I43 with appurtenant end I48ya of the lever common to all of the three totalizers of the central section and a similar mechanism is proparts to be now described. The totalizer b is connected by its Y-shaped element I431) by means of an arm I381) (see Fig. 2) fixed to'the shaft I3'Ib and a link I 40b, connected with its Y-shaped element I43!) (see Figs. 1 and 2), and the totalizer c is connected with the corresponding Y-shaped element I430 by means of a bell-crank lever 3I5, the link I40c and the arm'I38c.

In the left-hand lateral section including totalizers d, and i there is Y-shaped element I43 with appurtenant parts for each totalizer (seelFig. 1), and in the right hand lateral section there are correspondingY- shaped levers I43for each of totalizers y and pairs of totalizers h, k and Z, m.

The control mechanisms for all totalizers are identical and are to be described with reference to that of totalizer a. Some of the details of the control mechanisms for the totalizers b and c are to bel seen to the left of the central section in In starting position the Y-shaped lever I43a is locked threefold in the following manner (see especially Fig. 5). 7

Arm I451: of the lever I43a rests with an inclined surface 6a against a roller I 23a rotatably mounted on an arm to the main shaft 50. Arm I44a cooperates with a double-armed locking lever I48a rockableona stud 1a. A spring 9:: tends to retain one end Mara of said lever in looking engagement with arm I 44a, whereas a link I5Ia connects the other with a bell-crank lever 68a operable. by the analyzing keys. Lastly the Y-shapecl lever 3!: is also controlled by means.

spring I 55a secured to arm I54a and to a pin I56a provided on arm Ia and engaging the forklink I58a connected to arm shaped and I5Ia of a of each totalizer for addition or subtrac-.

I35a'bridge I04a rests on a l of an arm I38a rockable on is pivoted to'the end of one,

also provided one such I22a of a disk I20a secured lever I43a by means of a I 54a. A spring IEIa tends to maintain arm I541! in such a, position that an abutting surface I60a on the arm engages the roller I23a-on disk I20a. Further said arm I54a is locked by two locking members. A lever or catch 33a operable by the analyzing keys and actuated by a spring I62a engages the end of arm l54a. The arm I54a is also engaged by one arm of an angular catch I350 rockable on a stud I83a and operated by a spring Ii4a. the other leg of said catch extending towards the periphery of disk HM and being adapted to be acted upon by the projection I2 I a when driving shaft 50 is rotated.

Printing device The actuator wheels 45 of each section are connected with a printing device which may be of any suitable type. Although the actual design of the printing devices does not form any part of the invention, a brief description of such a device will be given for the sake of completeness, reference being made to Fig. 2 and to the printin device of the central section illustrated therein.

The printing device comprises type bars 320 of a number corresponding to the number of actuator wheels and carrying types 32I which are adapted to be pressed against a paper strip on a. platen roller 322. The type bars are vertically movable in guides 323. At its lower end each type bar 320 is provided with a recess 324, and engaging said recess through its one end is a doublearmed lever 325. These levers are rotatably mounted on a common shaft 336 and engage with their other fork-shaped end a pin 321 on the corresponding actuator wheel 45. On rotation of said wheels the type bars 33llcorresponding to actuator wheels will, consequently, be moved upwardly through such a distance as to cause the type 32I corresponding to the setting of the actuator wheel to be brought into printing position.

Provided in front of each type bar 320 is a hammer 330. The hammers are mounted on a shaft 33I carrying an arm 332 which by means of linkage is connected with an arm 333 iournalled on a stud 334. Arm 333 is adapted to be actuated by an operating arm 333 fixed ,to the main shaft I50.

Addition in totalizer "a The analyzing key or keys corresponding to a business transaction in which addition in totalizer a is involved, have on their operating shaft 33 an arm 34 which by means of a wire 33 is connected with a bell-crank lever 31a (see Fig. 2). When the key is depressed this lever is rocked in counter-clockwise direction causing wire Illa fixed to catch I l4a to be drawn downwardly and to rock said catch about its stud Il3a thereby disengaging the catch from the projecting endof spindle i02a. However, the totalizer is still retained in raised position by the prolongation l33a of the bridge l04a resting on stud l36a.

when on actuation the driving shaft 30 is turned in clockwise direction as shown in Figs. 2 and. 5, roller I23a leaves the inclined surface I43a on arm I43a of the Y-shaped lever M. This lever is, however, still retained in locked position by locking arm I43a, until on the continued rotation of shaft 30 this arm is raised by roller Illa. Thereby lever I43a is rocked by spring Illa in counter-clockwise direction about shaft I42 causin: link l40a and arm H311 to be drawn downwardly. The totalizer now loses its support on stud "3:1 and the adding wheels Ia are by spring I03a brought into engagement with the intermediary wheels Ia just at the moment when the machine shaft 50 has reached the end of its forward stroke.

During the return stroke of the driving shaft the adding wheels I00a, thus, engage the intermediary wheels I10a and are turned in counter-clockwise direction, thus entering the amount which during the forward stroke of the machine shaft has been introduced into the actuator wheels 45 in the manner above described.

Immediately at the end of the return stroke of the machine roller Ina strikes the inclined surface I 46a on arm I45a causing Y-shaped lever I43a to be rocked in clockwise direction and link Ia to be pressed upwards, whereby the stud I36a raises the totalizer out of engagement with the intermediary wheels I10a. At the end of the return stroke when the keys are returned into starting position in the manner above described, spring Ilia returns catch II4a into engagement with the projecting end of spindle I02a.

Ten transfer is effected in the following manner (see especially Fig. 11) As already described the stopping plates 25 operable by the keys are so arranged in relation to the actuator slides 33 determining the setting of the actuator wheels 43 during the forward stroke of the machine, that the actuator wheels 43 are always rotated through one tooth even when the corresponding stopping plates 35 have not been actuated, that is to say the actuator wheels corresponding to non-actuated keys are turned one tooth and actuator wheels corresponding to actuated keys 1 are turned one additional tooth beyond the angle corresponding to the position of the depressed pin 22. The rotation of the actuator wheels one tooth is transferred to the intermediary wheels I10, however only to the half "I of said wheels in mesh with the actuator wheel but not to the other half I13 thereof (see Fig. 11). This motion of wheel half I" is permitted as said half is capable of being turned one tooth independent of the wheel half I12 on account of the pin and slot connection I13, I14 and of the tendency of the spring I13 of maintaining pin I14 in engagement with the upper end of slot I13. Consequently, the correct setting of the actuator wheels determined by the depression of the keys is transferred to the wheel halves I12 but not the additional tooth.

When during the return stroke of the machine the amount set up is transferred to the totalizer and a. ten transfer is to take place, that is to say when a. totalizer wheel passes in counter-clockwise direction from nine to zero, the transfer tooth I33 on such a wheel presses down the end of the ten transfer pawl I30 corresponding to said totalizer wheel. This causes the end I 35 of the other arm I34 of said pawl I to release the pin I14 of the intermediary wheel I10 of the next higher order. During this rotation of ten transfer pawl I30 the pin I33 which was in engagement with the recess I31 in the lever I30 is moved into the recess I33 and simultaneously spring I33 rocks the lever I30 in counter-clockwise direction causing said lever to be brought into engagement with bell-crank lever I33 and the pawl I30 to be locked in this position.

When at the end of the return stroke of the machine the actuator wheels are moved through the additional tooth, there is not a corresponding motion of those intermediary wheels in which no tens transfer is to take place, since pins I14 for these wheels are locked by the ten transfer turn stroke of the machine, the wheel halves III,

I72 of such intermediary wheels I'III in which ten transfer has taken place are not in starting position. The setting of the intermediate wheels in their starting positions is effected at the beginning of the next machine stroke in the following manner (see especially Fig. 6).

Immediately at the beginning of the rotation of the driving shaft 50 during the next machine stroke projection I22 by the influence of lever 292 rocks lever 200 about shaft I 52 in clockwise direction, said motion being by link 205, bellcrank lever 206 and link 20? transmitted to hellcrank lever I91 (ISIa). This lever is rotated in clockwise direction and also levers I96 secured to the same shaft I95 as lever I91 (see Fig. 11).

In such intermediary wheels in which ten transfer has taken place and, consequently, pin I'It lies at the upper end of the slot I73 one arm of lever I 96 presses pin iit downwardly onto the lower end of slot I73 while simultaneously tensioning the appurtenant spring I15. At the same time the other arm of lever I95 rocks lever ISO in clockwise direction while tensioning spring I92 causing the ten transfer pawl I80 to be returned into starting position in which pin I86 engages recess I87 of lever I96. Immediately as the projection I22 has moved past the lever 202 spring i2? returns lever 209 into engagement with stop I99 thereby causing the bell-crank levers I96 to be returned into starting position. Now the intermediary wheels I10 are ready for the next setting of the actuator wheels.

Subtraction in totalizer a Theanalyzing key or keys which correspond to a business transaction inwhich subtraction in the totalizer a is involved, have on their'operating shafts 83 an arm 64 connected by a wire 65 with a bell-crank lever Eta. When the key is depressed, said lever 66a is turned in counterclockwise direction, causing the link H211 to be drawn downwardly. Thereby catch Ilila is removed from lever iIlEa. However, this lever is still in locked position by the stud I33a of arm I361; abutting against same.

When on starting the machine the driving shaft 58 is turned in clockwise direction, disk i2e secured on said shaft is turned in the same direction causing projection I2! to release roller are on lever E25 (see Fig. 6). Thereby this lever loses its support and swings in clockwise directionunder the influence of spring i2idrawing link I3d downwardly so that stop pin E3312 on virtue of this displacement the end of spindle IBM is removed from pawl I I4a but the totalizer is still retained in its raised position because the end I35a of the bridge IMa is still restingbn stud I36a. At the same time roller I23a releases arm 45a of the Y-shaped lever I43a, said lever being, however, retained in locked position, until roller I23a raises locking arm I i8a. In the mannerabove described the totalizer thereby loses its support on stud IBM and the subtracting wheels IIIIa will by spring I08a be brought into engagement with the intermediary wheels I'IIla just at the moment when the driving shaft 50 has attained the end of its forward stroke.

During the return stroke of the driving shaft 50 the subtracting wheels IIJI a, thus, engage the intermediary wheels I'Illa which by the actuator wheels 45 are turned in clockwise direction so that the subtracting wheels are rotated in counter-clockwise direction and deduct the amount which during the forward stroke of the driving shaft was introduced into the' intermediary wheels I'IIIa. Ten transfer is effected in the manner above described.

The machine is returned into starting position by the totalizer being raised out of engagement with the intermediary wheels in the manner described above. At the moment, when the totalizer is raised, the projection I 2| on disk I20 strikes roller I 24 on arm I25 which is rocked in counterclockwise direction (see Fig. 6). By link I30, bell-crank lever I3I and link I32 this movement is transferred to arm I34a the stud I33a of which returns lever 15a into starting position causing the totalizer to be returned into starting D sition. When in the manner above described the keys are released, spring IIIa returns catch IIOa into the position in which it looks lever I 05a.

SubtOtaling of positive amounts in'totalizer a in the manner above described. Rocking of bellcrank lever 58a causes locking rod I48a to release Y-shaped lever I43a. However, this lever is retained in locked position by the engagement of the roller I23a with the inclined surface I 4611 V on same.

When the driving shaft 50' is actuated and turned in clockwise direction and, consequently,

, roller I23a release lever Ifi3a, spring I55a room arm iSa is brought out of engagement with lever Idea. Having been released from-catch iida by the depression of the key this lever ififia swings'in counter-clockwise direction under the influence of spring Ifi 'ia causing the totalizer to be displaced in the same direction (towards the left in Figs. 2 and 11) so that the subtracting .wheels am will be'situated in proper position in relation to the intermediary wheels 'I'Iila. In

lever Id3a in counter-clockwise direction causing the totalizer to lose its support against stud I360 and the adding Wheels IIIDa to be brought into engagement with the intermediary wheels I'Ifla inthe manner above described, this taking place immediately started.

Consequently, during the forward stroke of the I driving shaft the adding wheels IBfla engage the intermediary wheels iIIia setting up in the latter the amount contained in the totalizer which in this caseis' positive. At the end of this movement the adding'wheels, I000; are in zero position with the transfer teeth I83 in engagement with the trip noses I82 on the ten transfer pawls I 80. The setting of the totalizer wheels I Iifla has also by means of the actuator wheels after the driving shaft has been 45 been transferred to the type bars 320, and at the end of the forward stroke the operating arm 335 strikes arm 333 causing the hammers 330 to be turned in counter-clockwise direction striking the types 32I which are in printing position.

During the return stroke of the driving shaft 50 the adding wheels Ila are still in engagement with the intermediary wheels I'I0a, so that to the adding wheels the same amount is again transferred which said wheels had transferred to the intermediary wheels during the forward stroke of the machine.

The machine is returned into starting position in a manner similar to that above described, spring I49a returning locking arm I43a into starting position.

Totaling positive amounts in totalizer a The analyzing key or keys corresponding to a business transaction in which a positive amount in totalizer a is to be transferred to the printing device or to be totaled in any other manner, have on their operating shafts 63 three arms 64 connected by means of wires 65 the first one with a bell-crank lever 61a, the second one witha bellcrauk lever 63a, and the third one with a catch 690. In the manner above described rocking of bell-crank levers 61a and 68a causes release of catch II4a and locking arm I48a. When rocked in counter-clockwise direction catch 63a releases locking arm I54a which, however,is still retained in locked position on the one hand by roller I23a and on the other hand by catch I 65a.

Immediately after the driving shaft 50 has been started the adding wheels I00a are brought into engagement with the intermediary wheels II0a as above described. When at the same time the Y-shaped lever I43a is rocked in counter-clockwise direction the stud I56a on arm I4Ia of said lever has attained the bottom of the recess I51a in the link Him by the influence of spring I5la.

During the continued forward stroke of the driving shaft the totalizer is actuated in the same manner as described above with reference to the subtotaling of a positive amount. At the end of the forward stroke, just when the adding. wheels I00a are in zero position and printing has taken v place projection I2Ia strikes the upper leg of V- shaped catch |65a turning said catch in counterclockwise direction thereby releasing locking arm I54a 'which has already been released by roller I23a. Spring IBIa rocks locking arm I54a in clockwise direction rocking by link I580. and pin I56a the Y-shaped lever I43a in the same direction. This causes the totalizer to be raised out of engagement with the intermediary wheels II0a by the influence of link HM and arm I33a.

During the return stroke of the driving shaft roller I23a strikes the inclined surface I4Ga on Y-shaped lever I43a and also the surface I600 on locking arm I54a causing said lever and arm to b returned into starting position under the influence of their springs ISBa and IiIa. Simultaneously pawl IIiia and catch 60a are returned into engagement with the locking arm "4a under the influenced their springs I04a and I62a.

Mechanisms for directing totalizer "a to totalize negative amounts a slot 2I2 in the machine frame plate during the displacement of the totalizer. Provided for each denomination of the totalizer are two arms 2I3, 2I4. Arm 2I3 rests with its fork-shaped end 2I5 on rod 2I I and is provided with two teeth 2 I 6 engaging the adding wheels I00 in the raised position of the totalizer and with a projection 2 I 3 for the return of the arm. Arm 2I4 is rockable on a shaft 211 secured between arms 2I0. A spring 2! connects arms 2 I3 and 2 I4 with each other.

By means of an angularly bent projection 220 each arm 2I3 rests on a projection 22I of arm 2I4 of the next lower order (Fig. 14). The arm 2 I3 which corresponds to the unit denomination rests with its supporting plate 220 on the frame as shown at 220 in Fig. 10. Each arm 2I4 rests on an angularly bent portion 221 of arm -2I4 of the next lower order (see especially Fig. 14) ex- I cept that no bent portion 22I is supplied on arm 2I4 of the next to the highest order.

Fixed toeach subtracting wheel IOI is an additional disk 222, and each of said disks except that of the highest order which is designed in a manner to be described later on has a recess 223, see Fig. 14. Extending downwardly from each arm 2I4 is a tongue 224 sliding on the periphery of the corresponding disk 222 and pressed into engagement therewith by the spring 2I8. Consequently, each arm 2I4 can take up either of two positions, viz. a lower position when tongue 224 engages the recess 223 of the correspondin disk 222, this being the case when the corresponding wheel IOI occupies the nine or starting. posi tion, and a raised position, when said tongue rides on the non-recessed portion of the periphery of the disk. Arm 2 I3 corresponding to the unit denomination occupies always lowered position. A rod 225 fixed. between the arms 2I0 serves as stop for arms 2 I4.

Arm 2I3 which, as stated above, rests with its supporting plate 220 on the projection 22I oi arm 2I4 of the next lower order will, consequently, also occupy either of two positions depending on the position of the arm 2I4 of the next lower order. Arm 2I3 is provided with a shoulder 230. Arms 233 are rockable on studs 232:: on the stationary machine frame, and secured to said arms 233 is a lockin rod 23I adapted in its raised position to engage the shoulder 230 of such arms 2I3 which are in their lower position (see Fig. 12).

Aspring 234 serves to maintain the locking rod 23I in starting position (see Fig. 11) To one of the studs 232: is attached an arm 232 (see also Fig. 10) and said arm 232 is connected by means of a wire 235 (233a, Fig. 2) with a bell-crank lever 10a operable by the analyzing keys. hi Fig. 11 the locking rod 23I and the arms 2 I3 and 2I4 are. shown in the position which they assume at the beginning of the forward stroke of the main shaft, whereas in Fig. 12 the locking rod 23I and one arm 2 I4 are shown in raised position in full lines and another arm 2I4 in lowered position in dotted lines.

Journalled on a stud 240a (see especially Fig. 5) is a double-armed lever 24Ia connected at its one end by a wire 242a with the bell-crank lever I I a operable by the analyzing keys and controlled by a spring 248a. At its other end lever In is provided with a pin 243a adapted to cooperate with the disk I20a secured on the main driving shaft 50. By means of a spring 244a lever 24Ia is connected to an am 2434 rockable about a stud 248a and controlled by a spring 241a, said arm being by a link 250a connected with a bellcrank lever 23in which in turn by a link 252a (252) is connected to an arm 253 (see Figs. 2

. position.

' said arm with that of a similar arm on the opposite side of the totalizer.

Subtotaling negative amounts in totalizer a The analyzing key or keys corresponding to a business transaction in which the above totaling forms an essential part have on their operating shafts 63 three arms 64 connected by wires 65 with a bell-crank lever 66a, 68a and 10a. When the key is depressed and said levers are rocked in counter-clockwise direction, 66a releases catch I I Be, 68a releases locking rod I48a and 10a causes by drawing wire 235 (235a) downwardly arm 233 to be rocked in clockwise direction, thereby raising locking rod 23L When then the driving shaft 50 is rotated in clockwise direction during the forward stroke of the machine, lever Ia is swung on its stud l'05a in counterclockwise direction bringing with it the totalizer so as to place the subtracting wheels MI in readiness for engagement with the intermediary wheels I10. In the totalizer wheel of the unit denomination arm 2I3 occupies its lower In those totalizer wheels ml which occupy starting position, i. e. they stand at 9", and in which, consequently, tongue 224 engages recess 223 the corresponding arm 2I3 also occupies its lower position provided that the arm 2 of the next lower order also occupies this position. If this is not the case, arm 2I3 is retained in raised position by the bend 22'! of arm 2 of the next lower order (see Figs. 10, 11 and 12).

The arms 2I3 of other totalizer wheels are in raised position. When the totalizer is displaced in the manner above described locking rod 23I will, consequently, strike the shoulder 230 on all arms 2I3 which are not raised, said arms being thereby stopped in their movement, whereas the raised arms 2I3 take part in the continued displacement. This results in the corresponding adding wheels I00 being turned by the teeth H6 in clockwise direction through an angle correspondingto one tooth causing the corresponding subtracting wheels I M to be turned one tooth in counterclockwise direction. In this manner the subtracting wheel of the unit denomination and the adjacent wheels standing on nine will be automatically supplied with a unit which is necessary for a correct indication or printing.

Immediately when the totalizer has been displaced in this manner roller I23a leaves the inclined surface I46a on the Y-shaped lever "3a causing the subtracting wheels IM to be brought into engagement with the intermediary wheels I as described above, this taking place immediately after the driving shaft is started. At the same time'the adding wheels I00 leave their engagement with the teeth 2l6.

During the forward stroke of the driving shaft the subtracting wheels IOI are in engagement with the intermediary wheels I'I0 setting said wheels on the negative amount contained in the totalizer, which amount is not the complement to that of the adding side of the totalizer but the real negaive amount contained in the totalizer due to the addition of the fugitive one. At the end of this movement thesubtracting wheels are in zero position, and the negative amount is rinted.

In order more clearly to illustrate the function the following example is given:

Assume the totalizer is clear; the positive wheels I00 will then stand at 0000, while the negative whee s IOI will stand at 9999, and the transfer tooth I83 on the adding wheels I00 is just to the right of trip nose I82, as shown in Fig. 11, while the transfer tooth on the subtracting wheels l0! would be to the left of said trip, if the bridge I04 with the two wheels IN and I00 were moved to the left (see Figure 12).

Now assume that I is added.

The adding wheels I00 will then read 180 The subtracting wheels I00 will then read If a total is now taken the fugitive one mechanism will set the adding wheels IBM to read 9889 and the subtracting wheels IM to read The subtracting wheels l0] showing the true negative total will mesh with the actuator wheels I'I0 on the forward stroke and will condition the print bars to print the total accordingly.

During the return stroke of the driving shaft the subtracting wheels IOI are still in engagement with the intermediary wheels I10 and are now set on the same amount which they delivered to the intermediary wheels during the forward stroke.

When the totalizer is raised at the end of the return stroke the adding wheels I00 are again brought into engagement with the teeth 2I6. When then the totalizer is returned by the influence of lever I05a only those arms 2l3 are first moved which are not locked by the locking rod 23I, whereas the arms -2I3 which are locked by said rod are not actuated, until rod 2 strikes the bottom of slot 2I5.

Totaling negative amounts in totalizer "a The analyzing key or keys corresponding to a business transaction in which the above totaling from totalizer a is involved have on their operating shafts 63 five arms 64 each connected by a wire 65 with one lever 66a, 68a. 69a, 10a and Na. grammatically in Fig. 7. When the key'is depressed said levers are rocked as above described so that 66a releases catch IIOa, 58a releases catchsMBa, 69a releases locking arm I540. and 10a raises locking rod 23L Rocking of bell-crank lever IIa causes the lever 24in to be rocked in counter-clockwise direction so that stud 24311 i brought into engagement with disk I20a.

Immediately when the driving shaft has been started the subtracting wheels IOI are brought into engagement with the intermediary wheels I10 after having been automatically supplied with a fugitive one as described above. During the c ntinued forward movement of the driving shaft Such a key connection is shown diaon disk |20a strikes pin 243a on lever 24Ia (see Fig. 5) causing arm 246a to be rocked in counter-clockwise direction, said movement being by link 250a, bell-crank lever 25la and link 252a transferred to shaft 255 and arm 256. The latter is turned in clockwise direction causin rod 251 to strike projection 2l9 (see Figs. 11 and 12) on those arms 2|3 which are in raised position and, consequently, have not been locked by locking rod 231 during the displacement of the totalizer, said arms 2I3 being displaced in such direction that their supporting plate 220 loses its support on the projection 22I on the arm 2 of the next lower order. This results in said arms 213 being moved downwardly under the action of the springs 2I8, until they rest on the locking rod 23! with the underside of their shoulder 230. The arms slide on the locking rod 23l, until the shoulder leaves same. whereupon they fall down to rest with their underside on the locking rod HI and are locked by said rod.

When during the continued forward movement of the driving shaft projection i2|a releases stud 243a on the lever In, spring 241a returns arm 246a into starting position, rod 251 being simultaneously returned into starting position. At the end of the forward stroke just when the subtracting .wheels IN are in zero position and indication or printing has taken place, projection l2ia strikes the upper leg of the angular catch 165a resulting in the subtracting wheels lDla. in their zeroized position bein, brought out of engagement with the intermediary wheels I10 simultaneously as the adding wheels I are brought into engagement with the teeth 216.

Then the return movement of the driving shaft sets in. Roller l23a is returned into engagement with the surface 160a on and l54a and returns said arm while tensioning springs |55a and l6ia, the arm being simultaneously locked by catch l65a. Meanwhile projection i2 la has also struck roller [24a resulting in lever I050. being returned into starting position bringing with it the totalizer. As all of the arms 213 are now locked by locking rod 23!, these arms do not take part in the return movement, until rod 2 strikes the bottom of slot 2i5. When this occurs all of the adding wheels I00 have been turned one tooth in counter-clockwise direction by the teeth 216 and, consequently, all subtracting wheels one tooth in clockwise direction. Thereby the totalizer i restored into starting position.

When the keys have been released spring 246a returns bell-crank lever Ha into starting pcsition. I

When taking a total or a subtotal the actuator slides 28 must, evidently, be able to perform a movement corresponding to nine teeth. In the embodiment above described it is assumed that for this reason all of the 9 digit keys D are depressed. However, to avoid this manipulation means may be provided by which the actuator slides 23 are automatically released from their engagement by the stopping plates 25 when a total or subtotal key is depressed. Two embodiments of such a means are shown in Figs. 16, 17, 18 and 19, 20, 21, respectively.

According to Figs. 16 to 18, inclusive, the stopping plates corresponding to the two first and two last rows of registering, totaling and zeroiz- ,ing keys are, as distinguished from those corresponding to the key rows C and D, divided into two parts 251: and 25y, the pins 23 of the keys inclusive, co-operating with the stopping plates 25x, whereas the pins 221: and My (see below) of the keys it it 1 t0 4 inclusive, and

R IV

VII

inclusive, co-operate with the stopping plate 25y. Secured to each stopping plate 25:: is a bent arm 252 which extends behind the corresponding stopping plate 25y.

Extending transversely of the key board is a rod 29 having studs 29a: engaging to the right of the stopping plates 25y and studs 29y engaging to the left of the stopping plates 25 of the digit key rows D. A spring 29a tends to maintain the rod 29 with its studs 29a: engaging the respective stopping plates.

Depression of any of the registering keys A has no influence upon the stopping plates of the other key rows, but when a key B or a key R is depressed, the corresponding stopping plate 25y is turned about its shaft 26 causing the rod 29 to be moved to the right in Figs. 17 and 18 whereby the studs 291 turn the, stopping plates 25 of the digit key rows D so that the actuator slides 28 can pass freely.

Another embodiment of this means for releasing the actuator slides 28 when taking a total is shown in Figs. 19 to 21, inclusive. Here the stopping plates 25 of the digit key rows D are provided with a projection 340 engaging recesses 3 in a rod 342 extending transversely of the key board (see Fig. 21), said recesses having such a size as to permit the stopping plates to be turned on depression of the keys when the rod 342 assumes its normal position. A spring 343 tends to maintain rod 342 in said position. A bell-crank lever 344 fulcrumed at 345 bears on the end of rod 342 and is connected by a link 346 with the one arm of a bell-crank lever 34! fulcrumed at 348 (see Fig. 19). The other arm of said lever 34'! co-operates with a roller I23: on a disk 120x secured to shaft 50 and is locked by a catch 349 which by means of a wire is connected with an arm 64 of the operating shaft 63 of each of the keys B and R. A spring 350 tends to maintain the bell-crank lever 34'! in engagement with the roller 1231:.

On depression of any key B or R the catch 349 is actuated to release bell-crank lever 341. On rotation of the driving shaft 50 the lever 34! is rotated in clockwise direction under the action of the spring 350 and, through link 346, moves the releasing rod 342 to the right in Fig. 20, causing the stopping plates 25 of the digit key rows D to be turned out of the path of th corresponding actuator rods 28 which are now free to move to theleft.

Means for locking (1 registering key when a totalizer is not in zeroized position This means which is shown in Fig. 2 as applied to totalizer b comprises a plurality of arms 26") (see especially Fig. 15) secured on a shaft 26017 extending along the totalizer, one arm for each of pairs of totalizer wheels lb and l0lb. At their free ends the arms 26Ib are each provided with a nose 262D adapted to slide on the fperiphery of a disk fixed to each of the totalizer wheels, e. g. the disk 22% of the subtracting wheels lfllb. Secured to shaft 260b is an arm 2642) which is actuated by a spring 21% tending to retain the arms 26lb in sliding engagement with the disk 2222). The disks 222b are each provided with a recess, g, the same recess 2231) serving for the supply of the fugitive one as described above, the nose 262b being adapted to'engage said recess, when the corresponding totalizer wheel is in starting position. By means of a link 2651) (see Fig. 2), a bell-crank lever 266b, a link 261?), a bell-crank lever 268 and a link 270 the arm 264b is connected with one arm of a bell-crank lever 21! to which the key spring of key is secured tending to bring the other arm of the lever 21! into engagement with a recess in the key rod 2| of said key.

When all of the arms 261D engage the recess 223b in the disks 22222, that is to say when all totalizer wheels are in starting position, bellcrank lever 2' is out of engagement with the key rod 2i and, consequently, the corresponding key can b depressed freely. When on the contrary, due to wrong setting one or more of the totalizer wheels 1011) do not occupy starting position and, consequently, the corresponding arms 26H) are in raised position (as shown in Figs. 2 and 14) bell-crank lever 21! engages the key rod 2i thus preventing the key from being depressed. In Fig. 2 it is shown how two registering keys are controlled in this manner.

Means for setting a totaling key to total posittve or negative amounts contained in a totalizer This means is shown in Fig. 2 as applied to totalizer a, but, evidently, th other adding and subtracting or balancing totalizers may also be provided with such means.

As seen in detail in Figs. 10 and 13, disk 2221:.

of the highest denomination has no recess 223 but instead thereof a spring finger 280. Further arm 256$ of said order terminates in a bend 28| and has its tongue 224a: somewhat displaced as compared with the tongues 224 of the lower denominations. As long as the totalizer contains a positive amount tongue 224:0 rests on a catch 282 rockably mounted on a stud 283 fixed to a supporting plate 284 secured to one arm of bridge I05. Rockably mounted on a stud 285 on said plate 286 is an arm 286 having two recesses 28! and 286 adapted to be engaged by catch 282. A spring 290 wound about stud 285 and engaging a stop 29! on plate 285 and another stop 292 on arm 286 serves toretain catch 282 in engagement with either of the recesses 28'! and 288.

Pivoted on a stud 295 on the frame (see also Figs. 2 and 11) is an angularly bent lever 296 one arm of which terminates so as to be operable by the end 28l of arm 2! 4:13, wherea the other arm is connected by a link 291, bell-crank lever 298, link 299, bell-crank'lever 300 and link 30! with a bell-crank lever 302 adapted to control the totaling key in the following manner, said key being shown set for positive totals in Fig. 2 in depressed and in Fig. 4 in starting position.

This key has two key rods 2|:c and 2111 each actuated by a spring 200: and 20g. respectively, and having at its upper end a recess 305m and 305g, respectively. The key stem is movably connected to a rod 306 carrying a pin 308 capable of being brought into engagementwith either of the recesses 305$ or 305g. A spring 30'! tends to engage pin 308 with recess 3059:. A link 309 connects rod 306 with bell-crank lever 302. The operating shaft 63 of the key rod 2h: carries an arm 64 connected to an adding bell-crank lever 61a and shaft 63 of key rod 2ly has an arm 64 connected to a subtracting bell-crank lever 66a.

When the totalizer wheel I00 of the highest denomination passes from zero to nine, that is to say when an amount is subtracted which is greater than that actually contained in the totalizer, and the totalizer thus contains a negative amount, the shoulder 280 of disk 222 strikes the catch 282 rocking same in counter-clockwise direction as seen in Fig. 10. Thereby catch 282 is shifted from engagement with recess 28! into engagement with recess 288 and tongue 224a: loses its support on the catch. When during the preceding forward stroke the totalizer was displaced towards the left in Figs. 2 and 11, the end 28l of arm 2M1: moved past the lever 296, and at the end of said stroke, when the subtracting wheels are in engagement with the intermediary wheels, arm 2M1: has moved downwardly into engagement with rod 225 lying now on the lefthand side of lever 296. When during the return stroke the totalizer is returned into starting position, the end 28I of arm 2l4a: strikes lever 296' rocking same in clockwise direction as shown in Figs. 2 and 11. This movement is transferred to rod 306 which is rocked out of engagement with recess 305:1: in the positive key rod 2|:1: and into engagement with recess 305g in the negative key rod 2 ly, the key being now set to take a negative total.

If in this position further items are subtracted from that contained in the totalizer and the totalizer wheel of the highest denomination is again moved from zero to nine, the finger 280 of disk 222 passes past the catch 282 while the same is maintained in engagement with recess 288 on account of spring 290. During the machine operation lever 306 is moved into engagement with the positive key rod 2|a: under ,the action of spring 301, but at the end of the operation lever 306 is again returned into engagement with the negative key rod 2Iy, as lever 296 is locked by the end 28! of arm 2 I410, so that key return stroke the totalizer is returned into raised position catch 282 raises the tongue 224:1: of arm 2M3: causing the end 28! of said arm to be out of the path of the lever 296. Thereby rod 306 is caused to remain in engagement with recess 3053: under the action of spring 301. The key is now in position to take a positive total.

In a machine having separate keys for taking positive and negative totals of a totalizer it is possible to utilize the lever 296 to lock the key for taking positive totals when the totalizer has gone over to the negative side and vice versa so as to make the operator aware of whether the amount contained in the totalizer is positive or negative. For this purpose the key rods 2|.1I and 2ly are operated by separate keys and the link 306 is fulcrumed on the machine frame locking the key rod 2hr or Hg with the recess 3053: or 3051/ of which its pin 308 is in engagement.

I have now described the function of one totalizer and the different mechanisms for setting for different senses of calculation. Before I proceed to describe a specific example of the application of the invention on a book-keeping machine, I will first describe some examples of the connections between the totalizers and the registering and totaling keys.

A given key may be adapted to select two or more totalizers and to set the selected totalizers for addition. In this case the catches H4 of these totalizers are each controlled by a bell-crank lever 61 connected by a wire to an arm 64 on the operating shaft 63 of said key.

A given key may be adapted to select two or more totalizers and to set the selected totalizers for subtraction. In this case the catches H of these totalizers are each controlled by a bellcrank lever 66 connected by a wire 65 to an arm 64 on the operating shaft 63 of the key A given key may be adapted to select two or more totalizers and to set some of them for addition and the other for subtraction, said key being connected with the adding totalizer by a bell-crank lever 61 and with the subtracting totalizer by a bell-crank lever 86.

In subtotaling a positive amount contained in a totalizer and transferring said amount addltively to one or more totalizers and subtractively to one or more other totalizers or in printing such a positive amount, the combinational key is connected with the totalizer to be subtotaled by a lever 61 and a lever 68, with each of the totalizers selected for addition by a lever 61 with each of the totalizers selected for subtraction by a lever 66. In totaling said positive amount the key in question is connected with the totalizer to be totaled also by a lever 69:

In subtotaling a negative amount contained in a totalizer and transferring said amount additively to one or more totalizers and subtractively to one or more other totalizers, or in printing said negative amount, the combinational key is connected with the totalizer to be subtotaled by levers 66, 68 and 10, with each of the totalizers selected for addition by a lever 61 and with each'of the totalizers selected for subtraction by a lever 66. In totaling said nega tive amount, the key in question is connected with the totalizer to be totaled also by a lever 69 and a lever H.

In general, it is to be noted that the levers 61 set the totalizers for addition; the levers 66 set the totalizers for subtraction; the-levers 61 and 68, in combination, set the totalizers for subtotaling a positive amount; the levers 66, $8 and 10, in combination, set the totalizers for subtotaling a negative amount; the lever 69 sets the totalizers for totaling a positive amount; and the levers 69 and H, in combination, set the totalizers for totaling a negative amount.

I will now proceed to describe the mode of operation of the machine in a numerical example.

In the book-keeping diagram shown in Fig. 22 reference letters a, 1) etc. to m, inclusive, indicate the totalizers of the machine, but only the function of totalizers a, b, c, d, e, f, and 9 will be more fully described. Each of said totalizers has six difierent methods of operation: two for the registration of amounts, viz. addition (-1-) and subtraction and four for totaling, viz. subtotaling positiive amounts totaling positive amounts subtotaling negative amounts and totaling negative amo'unts In Figure 22 the dots and the horizontal lines indicate which totalizers are actuated and in what sense they are actuated. For example, when the key A1 of Figure 22 is depressed, totalizers a and b are actuated in a positive direction, and totalizer f is actuated in a negative direction. Thus the horizontal lines indicate which of the totalizers are actuated and, of course, that they are actuated simultaneously, and the dots indicate the sense of operation of the selected totalizers.

It is assumed that said seven totalizers serve the following purposes.

Totalizer a registers capital balance.

Totalizer b serves to check the correct entering in the totalizers a. and c of old balances and the mechanical operation of the totalizers.

Totalizer c registers interest balance.

Totalizer d registers the sum of capital deposited or withdrawn,

Totalizer e registers the sum of interest accruing from capital deposited or withdrawn.

Totalizer f registers the sum of the differences between incoming and outgoing capital balances (positive or negative).

Totalizer g registers the sum of the differences between incoming and outgoing interest balances (positive or negative).

Further it is assumed that one of the customers of a bank at a certain occasion has a positive capital balance (demand on the bank) of ers. and an interest balance thereon until the end of the year of 4.32 crs. forming a total balance in his favour until the end of the year of 194.32 crs. On August 2, he withdraws an amount of 70 01s., the interest thereon until the end of the year amounting to 1.41 crs.

The book-keeping is then effected in the following manner:

(a) The amount of the capital balance 190 is set up on the key board by the. amount keys D and then key l is depressed. In the manner above described this key is by means of arms 64 and rods 65 connected to an adding bell-crank lever 61a controlling totalizer a, an adding bell-crank lever 61b controlling totalizer b and a subtracting bell-crank lever 66 controlling totalizer 1. When the machine thereafter is started the amount 190 is, consequently registered additively in totalizers a and b and subtractively in totalizer J and further the amount is printed.

(b) The amount of the interest balance, 4.32 crs., is set up by the amount keys D and the key is depressed. This key selects totalizers b. c and g setting the two first-mentioned for addition and the last-mentioned for subtraction. At the operation of the machine the amount is thus registered in the totalizers in the corresponding manner and further the amount is printed.

(c) The sum of capital and interest, 194.32 crs., is set up by the amount keys D and the key amounts has been'incorrectly read 01? or set up by the amount keys, totalizer b has not been zeroized by the Operation 0, resulting in the keys Sandi} having been locked by the catch 2' as described above and are, thus, prevented from being depressed. In such case the operator can not proceed with the following Operation 6. without becoming cognizant of the fact that some of the old balances have been incorrectly set up.

Presuming that the three above operations have taken place correctly, the following operations follow:

(d) The amount withdrawn, 70 crs., is set up by V the amount keys D and the key is depressed. This key selects totalizers a and (1 setting the former for subtraction and'the latter for addition. When the machine is started the amount is registered in corresponding manner and is printed.

(e) The interest accruing from the amount withdrawn, 1.41 crs., is set up by the amount keys D and the key is depressed selecting the totalizers c and e and setting the former for subtraction and the latter for addition. At the operation of the machine the amount is registered correspondingly and printed. J

Now all amount registering operations have been performed and it remains to let the totalizers of the machine read 01? their amounts to the printing devices and to other totalizers for controlling purposes, this being effected in the following manner.

(1) The key determining the sense of calculation of said totalthe amount in totalizer a is positive.

izers in such a manner that totalizer a is set for subtotaling from the positive side, totalizer b for subtraction and totalizer f for addition, all under the presumption that the amount contained in totalizer a is positive. When the machine is started totalizer a transfers to the actuator wheels its amount, crs., which is printed on the journal and on the account card, and is registered in totalizers b and f in the manner described. However, after operation the'amount is still contained in totalizer a.

(g) Key above set forth and is zeroized. Simultaneously the amount is printed.

(h) Key 3 is depressed selecting totalizers a and b and determining the sense of calculation of said totalizers in such a manner that totalizer a for totaling from the positive side and totalizer b is set for addition, all under the above presumption that On operation of the machine totalizer a transfers its amount, 122.91 crs., to totalizer b and is zeroized. Simultaneously the amount is printed.

(2') Finally key amount must be zero and is printed on operation of the machine.

Above it is assilmed that the capital and interest balances are positive amounts. I will now describe the function of the machine, when said amounts are negative. For this purpose it is assumed that the customer in question on Sept. 9 withdraws an amount of 350 crs. the interest thereon to the end of the year being 7 crs. Hereby, the customer will owe the bank an amount instead of having a demand on same. The bookkeeping is then efiected as follows:

(a) to (c) The old capital balance, 120 crs., the old interest balance, 2.91 crs., and the old balance to the favour of the customer 122.91 crs., are

b, c and g andv 

